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Author Question: Which of the following statements regarding attenuation of thetrpoperon is NOT true? (Read 29 times)

audragclark

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on: Jan 12, 2022
Which of the following statements regarding attenuation of the trp operon is NOT true?
◦ It is controlled by alternative folding of the mRNA synthesized from the trpL region.
◦ Translation of a trpL coding sequence into a 14-amino acid polypeptide (including the methionine of the start codon and two back-to-back tryptophan codons) is crucial to its function.
◦ If the two tryptophan codons were changed to arginine codons the operon would no longer be sensitive to tryptophan levels but would instead be sensitive to arginine levels.
◦ When tryptophan levels are low, the ribosome will occupy regions 1 and 2 after completing translation of the coding sequence, regions 3 and 4 will pair, and transcription will terminate.
◦ When tryptophan levels are high, the formation of a 3-4 stem loop followed by the poly-U string will prevent expression of the structural genes of the operon.
Genetic Analysis: An Integrated Approach ¦ Sanders, Bowman ¦ 3rd Edition
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Marked as best answer by audragclark on Jan 12, 2022

Anna

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Reply #1 on: Jan 12, 2022
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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audragclark

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Reply 2 on: Jan 12, 2022
Gracias!

duy1981999

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Reply 3 on: Yesterday
Wow, this really help

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